I feel like there's a joke here that went over my head, is the joke that cat howled? why is everyone laughing?

google has failed me here, what is the origin of this cat detector meme?

Saladofstones said:

google has failed me here, what is the origin of this cat detector meme?

Here:
https://vk.com/wall-132030209_1327?reply=1328

You dare question the capabilities of the Queen of Yharnam?! Off with your head!